Shuttle



March 28, 1939. w T 2,152,223

' SHUTTLE Filed O t. 5, 1958 2 Sheets-Sheet 2 I 9 P WM v 4 a r y ATTORNEYS.

Patented Mar. 28, 1939 UNITED STATES SHUTTLE William A. 'Iebo, Anthony, B. I.

Application .October 5,

14 Claims.

This invention relates to a shuttle and has for one of its objects to provide ridges or grooves on the surface of at least one of the members to control the position of the running filling yarn 5 in between the friction tensionmembers.

Another object of the invention is to have a control for the running filling yarn, as it is drawn from the bobbin and from between the friction tension members by the shuttle in passing through the different sheds as it is thrown back and forth across the lay, so as to assist in the positioning of the yarn with reference to its travel through the shuttle, particularly with reference to the height which the yarn will maintain in between the friction tension members as it is drawn from the bobbin.

Another object of the invention is to control the running filling yarn in'between the friction tension members during the first pick after transfer by providing ridges or grooves on the surface of at least one of the members, and particularly the control with reference to the height which the yarn maintains in between the friction tension members as it is drawn from the bobbin.

Another object of the invention is to control the running filling yarn in between the friction tension members during the first pick after transfer by providing a stop when required to assist the ridges .or grooves on the surface of at least one of the members and particularly the control with reference to the height which the yarn maintains in between the friction tension members as it is drawn from the bobbin on the first pick after transfer.

Another object is to assist in preventing a groove being cut in the wear pin by the running filling yarn by supporting the yarn in between the friction tension members with ridges or grooves on the surface of at least one of the members.

Another object of the invention is to assist the wear pin to support the running filling yarn in between the friction tension members so as to prevent undue wear on the wear pin.

Another object of the invention is to prevent the running filling yarn from going down too low in between the friction tens-ion members where it might be trapped between support holes in the bottom portion of the friction tension members and support pin.

Another object of the invention is to prevent the running filling yarn from going down too low in between the friction tension members andthus running partly out from between the lower edges of the friction tension members.

1938, e ia Q- 1 9 A further object of this invention is to provide this control by means of ridges or grooves ,on the surface of at least one of the members, with the ansulati s andd pth of th se ridg .Q grooms so arranged that they will cause the running filling yarn to move to the desired position of travel.

Another object of the invention is to provide ridges or grooves on the flared portion of at least one .of the members so that the friction tension members wil be sure to become threaded with the runnin fi li yar early in the fli ht o the shuttle after the filling yarn replenishment.

With these and other objects in view, the invention consists of certain novel features of .construction, as will be: more fully described, and particularly pointed .out in the appended claims.

With reference to the drawings:

7 Fig. 1 is a top plan View of the threading end of a shuttle shown fragmentally;

"Fig. :2 is a sectional view .of the threading block alone, removed from theshuttle;

Fig. :3 is a sectional View through the threading block online 3.-.3 of either Fig. 1 or 2;

Fig. 4 is a view similar .to Fig. 2 but illustrating a different position of the tension spring;

Fig. v5 is anedgeelevational view of two tension members in face-to-face contact;

. Fig. 6 is a perspective view illustrating a pairof tension members showing ridges or grooves at the upper portion thereof, alone;

Fig. '7 and Fig. 8 are views similar to Fig. 6 but showing modified forms;

Fig. 9 is an enlarged view of an upper end .of a pair of tension members showing anedge elevation;

.Fig. 10 is a sectional view of the tension .members shown in Fig. 6 or in Fig.7, the section being taken along the flaring upper grooved or ridged portions of the members;

Figs. 11, 12, 13, 14, 15, 16, 17, 18, 19 and 2O are perspective views of pairs of tension members, illustrating different surface formations for .accomplishing different results.

In the use of tension members for controlling the running filling yarn as it leaves a shuttle, various means have been provided for either holding the yarn in a certain definite position on the first pick after transfer or for endeavoring to cause a threading action to take place in between the friction tension members during the first pick or otherwise, and in order toflmore desirably control the yarn both on the first pick after transfer and during subsequent picks, I have provided ridges or grooves on the tension members which will initially cause a threading of the yarn between the tension members and thereafter will control the yarn during its running through the tension members which will assist the wear pin in supporting therunning filling yarn so it will not unduly rub upon the wear pin; and the followingv is a more detailed description of the present embodiment of this invention, illustrating the preferred means by which these advantageous results may be accomplished: f r r With reference to the drawings, 20 designates the body portion of the shuttle having a longitudinal cavity 2! in which the bobbin or filling carrier 22 is mounted and upon which the filling 23 is wound, all in the usual manner. The cavity 2| extends forwardly as at 24 and a threading block 25, usually of brass, is mounted within this extended cavity 24 and tightly fits therein. This threading block is similar to a usual construction, havinga horn 26 which extends from the frontwall thereof across the channel 21 through which the yarn passes on the first pick after transfer and which horn assists in guiding the yarn into the thread-eye and assists in maintaining the yarn in this threaded position.

Assembled in the portion of the threading block nearest the cavity 2| there is provided a pair of friction tension members 28 which, as illustrated in the other views, are each provided with a guide lug 29 which fits into the opening 30 in either wall of the threading block to suitably guide the friction tension member in its movement while its 7 lower end is provided with an opening 3| for the reception of the support pin 32 which passes through the threading block and bridges the thread passage between the-front and back walls thereof.

As the hole 3| is larger than the support pin 32 and as the guide lugs 29 aresmaller than the opening 36 into which they extend, a rocking mount is provided for each of the friction tension members and also each is permitted to move toward and from the other which movement is usually controlled by either one being backed rigidly by some support While the other is provided with a coil tension spring 33, or both are provided with coil tension springs for furnishing a resilient action of the members toward each other to provide a slip grip on the yarn and tension the same. This tension spring may be located in the high position as illustrated in Fig. 2 or in the lower portion as illustrated at 33 in Fig. 4.

A so-called stop 35 is mounted in the back wall 36 of the threading block and is of a blunt nose wire type which has its nose 3'! extending into the opening 38 in the front wall 39 of the threading block.

Yarn as it is led from the bobbin 22 will extend through the threading passage 27 in the threading block 25 and will enter between the friction tension members 28. It will usually extend above the stop 35 and below the horn 26 on the first pick after transfer but as the yarn moves in the opposite direction on the second pick after transfer the yarn will be drawn downward over the free end of stop 35 around the post 40 and into the thread eye 42 of the shuttle and at the same time is drawn lower in its position of travel between the friction tension members 28.

In order to control the yarn as it passes through the friction tension members, I have caused ridges or grooves to be formed on the surfaces of these friction tension members in some suitamazes able manner. very fine formations being pro vided by grinding the surface in the desired direction. The ridges or grooves on at least one of the flared portions of the friction tension members may be sufficient if a desired position is not required. I have illustrated this flare in Figs. 6, 7 and 8 at 43, 44 and 45. In Fig. 7 the flare 44 commences at the line 46 which extends at right angles to the length of the friction tension members. In Fig. 6 the flare line 47 is at one angle while in Fig. 8 the line of flare 49 extends to the opposite angle. 7

The direction lines consisting of the groovings or ribs are suitably formed by casting or even by so small an embellishment as the action of grinding. These lines of direction in Figs. 6, 7 and 8 at 50, 5| are so inclined that any yarn which engages the opposite surfaces as Elland 5| will be caused to be moved downwardly between the friction tension members. This flare above spoken of is verysmall as perhaps can best be indicated by the opening 52 as shown in Fig. 5. Where there is an inclination of the flare as in Fig. 6 an effective taper as shown in Fig. 10 is provided. The running position of the yarn in the pair of members shown in Figs. 6, '7 and 8 as at 53 is smooth so that after the yarn enters between the members no further movement by reason of the surface embellishment is caused to be exerted on the yarn.

Fig. 11 is similar to Fig. 6 on the upper flared area but on the surfaces which are in a substantially single plane, one member is grooved or ribbed at 54 in a direction to cause the yarn to move downwardly, whereas the other companion member is grooved as at 55 to cause the yarn to move upwardly. One directional movement due to the surface neutralizes the effect of the other and provides substantially the effect of a smooth surface except that these directional lines enable the yarn to better position itself between the friction tension members than were this surface smooth. This same surface formation is also provided in Fig. 12 which is comparable to Fig. 8 and. also provided in Fig. 13 which is comparable to Fig. 7, having a smooth portion 56 and 51 on these members due to the flare along which no groove or ribbing is provided.

In Fig. 14 the entire yarn engaging surface is in a single plane and in this figure the grooving 58 on the left hand member and grooving 59 in the upper portion of the right hand member is such as to direct the yarn downwardlyas it moves through the members, whereas the grooving 60 on the right hand members is such as to move the yarn upwardly so that positioning action as above explained is provided when the yarn reaches the mid-portion of these members; however, an opposite grooving 6| is provided on the left hand member at the lower portionso that yarn is directed upwardly as it approaches the wear pin, these ridges or grooves assist the wear pin 32' to support the running filling yarn so as to prevent undue wear on this pin.

Fig. 15 is an arrangement providing downwardly directing grooving 62 and 63 throughout the major portion of the length of each member whereas upwardly extending grooving 64 and 65 is provided on the lower portion of the members for directing the yarn upwardly away from the wear pin.

In Fig. 16 the same arrangement is provided as in Fig. 15 except that the surfaces 52 and 63 are spaced from the surfaces 64 and 65 by an ungrooved portion or area 66 and 61 which serves to permit the running filling yarn to have a greater traverse motion so as to distribute the wear over a greater portion of the friction surface of the friction tension members.

In Fig. 18 the arrangement is that thedownwardly directed grooved area '68 is provided on the upper portion of one member and an upwardly directed area 69 on the lower portion thereof; while on its companion member an upwardly directed area 'Eil is provided on the upper portion and an area givingthe same direction N is provided on the lower portion, both areas being separated by plane portions 12 and i3.

In Fig. 17 downwardly directed grooved or ribbed areas It and 75 are provided while an upwardly directed area 16 is provided on the left hand member Fig. 17.

In Fig. 19, the arrangement of the ribs or grooves in the area M on the upper part of the plane surface of one of the members is to cause the yarn to enter and move downwardly between the members while on the remaining area of this member the ribs or grooves are directed at the opposite acute angle to cause the running filling yarn to move upwardly. The companion member in Fig. 19 has its area It provided with ribs or grooves extending longitudinally of the memher or up and down of the member which will be non-effective as a directional element in connection with this pair of members and will serve only to provide a greater friction on the yarn than were this area 16 perfectly smooth.

In Fig. 20 the arrangement of the areas "M and '35 are identical on one of the members to that illustrated on the corresponding member in Fig. 19 while there is an area Ti similar in all respects to the area 16 on the companion member as in Fig. 19 but of an extent less than the entire length of this member and with an area "i8 at the lower portion of this companion member which is grooved or ribbed in a direction to cause upward movement of the running filling as it contacts this area in its movement between the two friction tension members.

It will be readily apparent that the grooving at the lower portion of the member so as to cause an upward movement of the yarn will prevent this yarn from passing down too low in between the members at one side or" the support pin or into the opening in the member through which the support pin passes with a consequent trapping of the yarn below a portion of the edge of the member or between the edges of the opening and the support pin, which trapping has been known to occur in the operation of shuttles with friction tension members of the heretofore usual construction with a consequent breaking of the yarn.

By these arrangements I am enabled to control the running filling yarn Bf! at any desired location or in any horizontal plane desired without the use of additional adjuncts in the device. In some cases it is desirable to provide more tension on the running filling yarn during the first pick after transfer by holding the running filling yarn up in a high location between the friction tension members and opposite the tension springs where a direct spring action will be exerted on it, as shown in Fig. 2, which can be accomplished with or without the stop 35 which when used is assisted by the ridges or grooves on the surface of at least one of the members. The running filling yarn is then drawn beneath the stop if one is used on the second pick after transfer and supported about the center portion of the friction tension members and somewhere near in line with the friction surface of the wear pin for further running of the filling yarn.

The foregoing description is directed solely towards the construction illustrated, but I desire it to be understood that I reserve the privilege of resorting to all the mechanical changes to which the device is susceptible, the invention being defined and limited only by the terms of the appended claims.

I- claim:

1. In a shuttle a pair of opposed friction ten sion members for exerting ,a slip grip on the running filling yarn as it passes through said members, one of said members having a series of ridges or grooves over a portion of its area which extend at an acute angle in one direction to the running filling, and the other member having a series of ridges or grooves which extend at an angle in the other direction to the running filling.

2. In a shuttle a pair of opposed friction tension members for exerting a slip grip on the running filling yarn as it passes through said members, one of said members having aseries of ridges or grooves over a portion of itsarea which extend in a direction to cause the yarn to move further inward from the entrance between said members and having over another portion of its area ridges or grooves which extend in adirection to cause the yarn to move outward toward the entrance between said members.

3. In a shuttle a. pair of opposed friction tension members for exerting a slip grip on :the running filling yarn as it passes through said members, one of said members having a series of ridges or grooves over a portion of its area which extend in a direction to cause the yarn to move further inward from the entrance between said members and having over another portion of its area ridges or grooves which extend in a direction to cause the yarn to move outward toward the entrance between said members, said latter area being located at a portion of said members remote from the entrance opening.

4. 'In a shuttle-a pair of opposed friction tension members for exerting a slip grip on the running filling yarn as it passes through said members, one of said members having a series of ridges or grooves over a portion of its area which extend in a direction to cause the yarn to move further inward from the entrance between said members and having over another portion of its area ridges or grooves which extend in a direction to cause the yarn to move outward toward the entrance between said members and an ungrooved or unribbed space between said different areas.

5. In a shuttle a pair of opposed friction tension members for exerting a slip grip on the running filling yarn as it passes through said members, one of said members having a series of ridges or grooves over a portion of its area which extend at an acute angle in one direction to the running filling yarn and having over another portion thereof a series of ridges or grooves which extend at an angle in the other direction to the running filling yarn, and the other member having a series of ridges or grooves which extend in the same acute direction to the running filling yarn as on one portion of the other mating member to control the insertion of the running filling yarn between said members on the first pick after transfer.

6. In a shuttle, a pair of opposed friction tension members for exerting a slip grip on the running filling yarn as it passes through said members, one of said members having a series of ridges or grooves over a portion of its area which extend in a direction to cause the yarn to .movefurther inward from the entrance between said members, and the other member having a series of ridges or grooves over a portion of its area which extend in a direction to cause the yarn to move outward toward the entrance between said members. V

7. In a shuttle, a pair of opposed friction tension members for exerting a slip grip on the running filling yarn as it passes through said members, both of said members having a series of ridges or grooves over the bottom portion of their areas which extend in a direction to cause the yarn to move outward toward the entrance between said members.

8. In a shuttle a pair of opposed friction tension members for exerting a slip grip on the running filling yarn as it passes through said members, one

of said members having a series of ridges or V grooves over a portion of its area which extend at an acute angle in one direction to the running filling yarn and'having over another portion thereof a series of ridges or grooves which extend at an angle in the other direction to the running filling yarn, and the other member having a series ,of ridges or grooves over a portion of its area which extend at an acute angle in one direction to the running filling yarn and having over another portion thereof a series of ridges or grooves which extend at an angle in the other direction to the running filling yarn.

9. In a shuttle, a pair of opposed friction tension members for exerting a slip grip on the running filling yarn as it passes through said members, one of said members having a series of ridges or grooves over the bottom portion of its area which extend in a direction to cause the yarn to move outward toward the entrance between said members.

10. In a shuttle, a pair of opposed friction tension members for exerting a slip grip on the running filling yarn as it passes through said members, one of said members having a series of ridges or grooves over a portion of its area which extend at an acute angle in' one direction to the running filling yarn and having overanother portion thereof a series of ridges or grooves which extend at an angle in the other direction to the running filling yarn, and the other member having a series of ridges or grooves which extend in the same acute direction to the running filling yarn as one portion of the said other of the pair of members.

11. In a shuttle, a pair of opposed friction tension members for exerting a slip grip on the running filling yarn as it passes through said members, one of said members having a series of ridges or grooves over a portion of its area which extend at an acute angle to the running filling in a direction to cause the running filling to move outward toward the entrance between said members.

12. In a shuttle, a pair of opposed friction tension members for exerting a slip grip on the running filling yarn as it passes through said members, one of said members having a series of ridges or grooves over a portion of its area which extend at an acute angle to the running filling in a direction to cause the running filling .to move outward toward the entrance between said members, and a stop located to assist in limiting the insertion of the running filling between said members on the first pick after transfer.

13. In a shuttle, a pair of opposed friction ten--, sion members for exerting a slip grip on the running filling yarn as it passes through said members, one of said members having a series of ridges or grooves over a portion of its area which extend in a direction to cause the yarn to move further inward from the entrance between said members and having over another portion of its area ridges or grooves which extend in a direction to cause the yarn to move outward toward the entrance between said members.

14. In a shuttle a pair of opposed friction tension members for exerting a slip grip on the running filling yarn as it passes through said members, one of said members havinga series of ridges or grooves over the entrance portion of its area which extend at an acute angle in a direction to cause the running filling to move inward from the entrance between said member and one member having a series of ridges or grooves which extend at an angle in the other direction to the running filling and located on a portion inward from the entrance between said members to cause the running filling to move outward toward the entrance between said members, and a stop to assist the ridges or grooves to limit the insertion of the running filling between said members on the first pick after transfer.

WILLIAM A. TEBO. 

